.messageBao {
  padding: 0 0 0 7px;
  box-sizing: border-box;
  width: 100%;
  height: 90%;
}

.input {
  height: 8%;
  position: relative;
}

.input::after {
  content: '';
  height: 1px;
  transform: scaleY(0.3);
  width: 100%;
  position: absolute;
  background-color: #e4e7ec;
  top: 0;
  display: flex;
  flex-direction: column;
}
